IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 1100 UTC 10 December 2025 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Gale Warning 11. Part 2 Situation at 100600 UTC Cold front near 40S101E 46S106E. Forecast near 46S126E 50S129E at 110900UTC and moving east of area thereafter. Forecast trough entering area from west near 50S080E 45S082E at 101500UTC. Forecast near 46S098E 50S100E at 111200UTC. Part 3 Forecast Refer to latest warnings for details of the area affected. South of 42S080E 45S094E 41S109E 46S129E, outside warning areas: Northwesterly quarter winds, shifting southwesterly quarter east of cold front. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. East of line 29S111E 35S112E: Southerly quarter winds 20/33 knots developing from 110000UTC. Rough to very rough seas. Low to moderate swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly within 120nm of fronts, low and within 60nm of trough. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 20:00 UTC Wednesday.